Tekmar Universal Reset Module - Four tN4, Two Boiler, DHW & SP

The Universal Reset Module 423 is designed to operate all of the mechanical equipment in a hydronic heating system, except for zones, coordinating their operation through network communication. It can be used in applications ranging from a single zone of baseboard with an on/off boiler, to four temperature systems comprised of multiple fan coils, baseboard, mixed radiant floor zones, and two modulating/condensing boilers. This control regulates up to four space heating water temperatures through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling two on/off or modulating boilers, Domestic Hot Water, setpoint loads, and can expand up to 24 zones for each space heating water temperature (96 in total).

Features

Automatic Boiler Differential

Boiler Protection

Controls up to 4 water temperatures (with use of up to 3 mix expansion modules)